12644949 has 8 divisors (see below), whose sum is σ = 16915392. Its totient is φ = 8402240.

The previous prime is 12644941. The next prime is 12645011. The reversal of 12644949 is 94944621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12644949 - 2³ = 12644941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5844 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (2114424).

Almost surely, 2^12644949 is an apocalyptic number.

It is an amenable number.

12644949 is a deficient number, since it is larger than the sum of its proper divisors (4270443).

12644949 is a wasteful number, since it uses less digits than its factorization.

12644949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867.

The product of its digits is 62208, while the sum is 39.

The square root of 12644949 is about 3555.9737063145. The cubic root of 12644949 is about 232.9730546551.

The spelling of 12644949 in words is "twelve million, six hundred forty-four thousand, nine hundred forty-nine".